Revert "drm/bridge: lt9611uxc: Switch to devm MIPI-DSI helpers"

This reverts commit f53a0457.

This and the dependent fixes broke display on RB5.

Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>